{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78503",
    "entityType": "User",
    "nonce": "0x88e27596b9d80c89656c8f86d6fc6a001eaa8019d58b5362a692a76315b37233",
    "signature": "0xc66eaccc82107abd4551fc8c02a6033abf48f05bf66ddbf3c25ac4b339f9e1b1648a8bf17733596aacac379466a26b352592ff44d3585c46dd97fccafb540f681b",
    "signer": "0x8ED8606Ab8cF49801aEa2bf8fFD349E9c85bC6a0",
    "userId": "464330844"
  }
}